A cylinder group fragment map is missing some free fragments.
During preening, fsck reconstructs the maps.

Action

To reconstruct the free-fragment map, type y at
the SALVAGE prompt. To ignore this error condition, type n.

CG cg-number: BAD MAGIC NUMBER

Cause

The magic number of cylinder group cg-number is
wrong. This error usually indicates that the cylinder group maps have been
destroyed. When running interactively, the cylinder group is marked as needing
reconstruction. fsck terminates if the file system is being
preened.

Action

If this occurs, contact your local service provider or another
qualified person.

CORRECT GLOBAL SUMMARY (SALVAGE)

Cause

The summary information is incorrect. When preening, fsck recomputes the summary information.

Action

To reconstruct the summary information, type y at
the SALVAGE prompt. To ignore this error condition, type n.